Any decent lawyer can drive a truck through this one. There was no imminent danger to the welfare or safety of any student, unless Dr. Boren was afraid of riots by blacks, which in that case, he would be guilty of racism.
Also, if there is a lease, then there are rules in the lease that govern how the lease can be terminated.
How you can terminate the lease for ALL based on the actions of TWO when the actions were 1) not on University property and 2) not on the leased property in question are definite grounds for suit.
Whatever Dr. Boren did to the two students is one thing, but to punish the entire fraternity without due process is an overreach, unfair and unlawful. .
And a decent defense attorney can shift it to protect his client. Danger is in the opinion of the University President. He could easily say that he took actions to prevent retribution agains the students expelled.
Also, if there is a lease, then there are rules in the lease that govern how the lease can be terminated.
The lease was with SAE. When SAE terminated the chapter then they were the ones ending the lease.